CREST Science Olympiad Class 9 Previous Year Papers

Preparing for the Class 9 Science Olympiad can feel challenging, but using previous year question papers makes a big difference. These papers give students a solid understanding of how questions are framed and what topics to focus on, making revision more targeted.

How These Papers Help

• They cover crucial topics such as Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound etc.
• They improve time management, analytical thinking, and help students handle tricky questions more confidently.
• Answer keys are included to help students review and strengthen weak areas.

Download the Science Olympiad Previous Year Paper for Class 9 (PDF) to support focused revision and help your child step into the exam feeling well-prepared and motivated.

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Syllabus:

Section 1: Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound, Matter in Our Surroundings, Is Matter Around Us Pure, Atoms and Molecules, Structure of Atom, Cell - The Fundamental Unit of Life, Tissues, Diversity in Living Organisms, Why Do We Fall Ill, Natural Resources, Improvement in Food Resources.

Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1

Sample Paper Previous Year Paper Marking Scheme Free Study Material

Q.1

Q.2

Q.3

Q.4

Q.5

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Q.9

Q.10

Q.1	In the following question, an assertion and reason are given. Choose the correct option: Assertion: Meiosis is also known as a reduction division. Reason: Meiosis involves the formation of daughter cells with half the number of chromosomes than that of the parent cell.
	a) Both assertion and reason are true and reason is the correct explanation for the assertion		b) Both assertion and reason are true and reason is the not the correct explanation for the assertion
	c) Assertion is true and reason is false		d) Assertion is false and reason is true

Q.2	In the following question, an assertion and the reason are given. Choose the correct option: Assertion: Plasma membrane contains bimolecular lipid layer, the surface of which is interrupted by proteins. Reason: Selective permeability of the plasma membrane is explained with the help of a fluid mosaic model.
	a) Both assertion and reason are true and reason is the correct explanation for the assertion.		b) Both assertion and reason are true, but reason is not the correct explanation for the assertion.
	c) Assertion is true and reason is false.		d) Assertion is false and reason is true.

Q.3	Choose the correct option and complete the following sentence: As the principal quantum number increases, the difference of distance of separation between consecutive energy levels ______________.
	a) decreases		b) remains the same
	c) increases		d) some times increases and sometimes decreases

Q.4	Consider the following sentences and choose the correct option: (i) The cell wall is the site of energy production in a plant cell. (ii) Lysosomes are the reservoirs of starch, oil and protein granules. (iii) A plant cell becomes turgid due to plasmolysis. (iv) Chemically plasma membrane is composed of fats and lipids. (v) The functional segments of DNA are called genes.
	a) Only (i) is correct		b) Only (iv) is correct
	c) Only (v) is correct		d) (iii), (iv) and (v) are correct

Q.5	Sam applied breaks to his motorcycle which produced retardation of 6 m/s2. The motorcycle took 2 seconds to stop after applying the break. Calculate the distance it covers during this time:
	a) 6 m		b) 8 m
	c) 10 m		d) 12 m

Q.6	A compound 'X' is an ionic compound. Which of the following is not the characteristic feature of X?
	a) X is soluble in water.		b) X is a good electrical conductor in solid-state.
	c) X melts at high temperature.		d) X is formed by transfer of electron(s).

Q.7	Hard water cannot be used in boilers. Which of the following is the reason for the same?
	a) The boiling point of hard water is high.		b) The conductivity of hard water is less.
	c) Hard water causes scales on the walls of the boilers.		d) Hard water reacts with metals used in making boilers.

Q.8	A ship at rest is sending ultrasonic sound waves to detect a shoal of fish. If the time gap between the signal sent from the ship and received (reflected signal) is 0.5 s, then find the distance of the shoal of fish from the ship. (Velocity of sound in water is 1400 m/s)
	a) 300 m		b) 350 m
	c) 400 m		d) 450 m

Q.9	Fill in the blank: David is carrying a school bag of 3 kg mass on his back and moves 200 m on a levelled road. The work done against the gravitational force will be (g = 10 ms-2) ____________.
	a) 6 x 103 J		b) 6 J
	c) 0.6 J		d) zero

Q.10	Which of the following is not a consequence of desertification?
	a) Decrease in the water-holding capacity of soil.		b) Increased chances of floods.
	c) Increase in the temperature of the earth.		d) Decrease in the concentration of carbon dioxide in the atmosphere.

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Additional Preparation Resources

Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 9 -

1. CREST Science Worksheets Package for class 9 - It is a package of 5 worksheets. The worksheets are in the same pattern as the previous year paper. Hence, very useful for preparation. Existing users can purchase additional practice worksheets by following these steps: Login at https://www.crestolympiads.com/login -> Dashboard -> Additional Practice -> Buy & new users can visit https://www.crestolympiads.com/registration
2. CREST Science Olympiad book for class 9 - The book covers topic-wise reading material, chapter-wise practice questions with answer key & contains the previous year paper. The book is available in both physical and pdf formats. Proceed now to purchase the Olympiad book. Also, students can view & download the first chapter of the Science Olympiad book for class 9 for free.

Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 9.